The Mountain Grove plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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4.63 inches of rain fell in two days, the most for this week of the year since records began in 1901. The next wettest, 3.42 inches, fell in 2005.
Mountain Grove’s center stands about 1,480 ft above sea level. Within three miles the land runs from 1,240 ft to 1,570 ft, a difference of 330 ft: rolling country. The highest named summit within 15 miles is Mary Gray Hill, about 1,680 ft, 11 miles west.
Under the town center the state geologic map shows Smithville Dolomite, Powell Dolomite, Cotter Dolomite, Jefferson City Dolomite (dolostone), from the Early Ordovician, 471 to 487 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 34×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 23 mi of the line.
Sandstone, chert. Age: Early Ordovician, 471 to 487 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Mountain Grove reaches the Gulf of America by way of East Whetstone Creek, Whetstone Creek, the Gasconade, the Missouri and the Mississippi: about 1,530 river miles.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Mountain Grove; river miles along the main stem, rounded.
Mountain Grove has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 22° in January. A normal year brings about 10 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Mountain Grove normally reaches 56° and falls to 36°. The record high is 79°, in 1999; the record low 5°, in 1986. The most rain on this date, 2.05 in, fell in 1993.
Normals 1991–2020 and records since 1901 at Mountain Grove 2 N, here. NOAA, through RCC-ACIS.
